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Finding the Fourth Proportional to 91,888.32, 126,819.76 and 56,099.20

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Solution

The fourth proportional to 91,888.32, 126,819.76 and 56,099.20 is: 77,425.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,888.32 : 126,819.76 = 56,099.20 : x
  2. Step 2: Convert to fraction form
    91,888.32/126,819.76 = 56,099.20/x
  3. Step 3: Cross multiply
    91,888.32x = 126,819.76 × 56,099.20
  4. Step 4: Simplify right side
    91,888.32x = 7,114,487,080.19
  5. Step 5: Solve for x
    x = 7,114,487,080.19/91,888.32
  6. Step 6: Final answer
    x = 77,425.37

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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.