Home / 74,337.40-102,585.71-40,345.89

Finding the Fourth Proportional to 74,337.40, 102,585.71 and 40,345.89

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Solution

The fourth proportional to 74,337.40, 102,585.71 and 40,345.89 is: 55,677.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,337.40 : 102,585.71 = 40,345.89 : x
  2. Step 2: Convert to fraction form
    74,337.40/102,585.71 = 40,345.89/x
  3. Step 3: Cross multiply
    74,337.40x = 102,585.71 × 40,345.89
  4. Step 4: Simplify right side
    74,337.40x = 4,138,911,487.40
  5. Step 5: Solve for x
    x = 4,138,911,487.40/74,337.40
  6. Step 6: Final answer
    x = 55,677.38

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1.5x scale

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.