Home / 78,735.60-108,652.40-42,925.04

Finding the Fourth Proportional to 78,735.60, 108,652.40 and 42,925.04

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Solution

The fourth proportional to 78,735.60, 108,652.40 and 42,925.04 is: 59,235.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,735.60 : 108,652.40 = 42,925.04 : x
  2. Step 2: Convert to fraction form
    78,735.60/108,652.40 = 42,925.04/x
  3. Step 3: Cross multiply
    78,735.60x = 108,652.40 × 42,925.04
  4. Step 4: Simplify right side
    78,735.60x = 4,663,908,616.10
  5. Step 5: Solve for x
    x = 4,663,908,616.10/78,735.60
  6. Step 6: Final answer
    x = 59,235.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.