Home / 78,911,999.60-118,367,999.40-57,244,953.20

Finding the Fourth Proportional to 78,911,999.60, 118,367,999.40 and 57,244,953.20

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Solution

The fourth proportional to 78,911,999.60, 118,367,999.40 and 57,244,953.20 is: 85,867,429.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,911,999.60 : 118,367,999.40 = 57,244,953.20 : x
  2. Step 2: Convert to fraction form
    78,911,999.60/118,367,999.40 = 57,244,953.20/x
  3. Step 3: Cross multiply
    78,911,999.60x = 118,367,999.40 × 57,244,953.20
  4. Step 4: Simplify right side
    78,911,999.60x = 6,775,970,586,030,629
  5. Step 5: Solve for x
    x = 6,775,970,586,030,629/78,911,999.60
  6. Step 6: Final answer
    x = 85,867,429.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.