Home / 91,904.32-126,841.92-56,115.20

Finding the Fourth Proportional to 91,904.32, 126,841.92 and 56,115.20

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Solution

The fourth proportional to 91,904.32, 126,841.92 and 56,115.20 is: 77,447.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,904.32 : 126,841.92 = 56,115.20 : x
  2. Step 2: Convert to fraction form
    91,904.32/126,841.92 = 56,115.20/x
  3. Step 3: Cross multiply
    91,904.32x = 126,841.92 × 56,115.20
  4. Step 4: Simplify right side
    91,904.32x = 7,117,759,709.18
  5. Step 5: Solve for x
    x = 7,117,759,709.18/91,904.32
  6. Step 6: Final answer
    x = 77,447.50

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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.