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Finding the Fourth Proportional to 98,385.76, 135,772.37 and 55,946.89

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Solution

The fourth proportional to 98,385.76, 135,772.37 and 55,946.89 is: 77,206.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,385.76 : 135,772.37 = 55,946.89 : x
  2. Step 2: Convert to fraction form
    98,385.76/135,772.37 = 55,946.89/x
  3. Step 3: Cross multiply
    98,385.76x = 135,772.37 × 55,946.89
  4. Step 4: Simplify right side
    98,385.76x = 7,596,041,849.43
  5. Step 5: Solve for x
    x = 7,596,041,849.43/98,385.76
  6. Step 6: Final answer
    x = 77,206.72

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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.