Home / 56,842.40-78,440.08-31,691.68

Finding the Fourth Proportional to 56,842.40, 78,440.08 and 31,691.68

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Solution

The fourth proportional to 56,842.40, 78,440.08 and 31,691.68 is: 43,733.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,842.40 : 78,440.08 = 31,691.68 : x
  2. Step 2: Convert to fraction form
    56,842.40/78,440.08 = 31,691.68/x
  3. Step 3: Cross multiply
    56,842.40x = 78,440.08 × 31,691.68
  4. Step 4: Simplify right side
    56,842.40x = 2,485,897,914.53
  5. Step 5: Solve for x
    x = 2,485,897,914.53/56,842.40
  6. Step 6: Final answer
    x = 43,733.16

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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.