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Finding the Fourth Proportional to 98,373.76, 135,754.18 and 55,931.38

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Solution

The fourth proportional to 98,373.76, 135,754.18 and 55,931.38 is: 77,184.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,373.76 : 135,754.18 = 55,931.38 : x
  2. Step 2: Convert to fraction form
    98,373.76/135,754.18 = 55,931.38/x
  3. Step 3: Cross multiply
    98,373.76x = 135,754.18 × 55,931.38
  4. Step 4: Simplify right side
    98,373.76x = 7,592,918,628.17
  5. Step 5: Solve for x
    x = 7,592,918,628.17/98,373.76
  6. Step 6: Final answer
    x = 77,184.39

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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.