Home / 72,908,881.60-109,363,322.40-71,775,140.80

Finding the Fourth Proportional to 72,908,881.60, 109,363,322.40 and 71,775,140.80

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Solution

The fourth proportional to 72,908,881.60, 109,363,322.40 and 71,775,140.80 is: 107,662,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,908,881.60 : 109,363,322.40 = 71,775,140.80 : x
  2. Step 2: Convert to fraction form
    72,908,881.60/109,363,322.40 = 71,775,140.80/x
  3. Step 3: Cross multiply
    72,908,881.60x = 109,363,322.40 × 71,775,140.80
  4. Step 4: Simplify right side
    72,908,881.60x = 7,849,567,863,615,794
  5. Step 5: Solve for x
    x = 7,849,567,863,615,794/72,908,881.60
  6. Step 6: Final answer
    x = 107,662,711.20

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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.