Home / 81,428.50-112,373.54-45,617.74

Finding the Fourth Proportional to 81,428.50, 112,373.54 and 45,617.74

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Solution

The fourth proportional to 81,428.50, 112,373.54 and 45,617.74 is: 62,953.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,428.50 : 112,373.54 = 45,617.74 : x
  2. Step 2: Convert to fraction form
    81,428.50/112,373.54 = 45,617.74/x
  3. Step 3: Cross multiply
    81,428.50x = 112,373.54 × 45,617.74
  4. Step 4: Simplify right side
    81,428.50x = 5,126,226,763.71
  5. Step 5: Solve for x
    x = 5,126,226,763.71/81,428.50
  6. Step 6: Final answer
    x = 62,953.72

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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.