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Finding the Fourth Proportional to 65,981.80, 98,907.90 and 58,983.40

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Solution

The fourth proportional to 65,981.80, 98,907.90 and 58,983.40 is: 88,417.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,981.80 : 98,907.90 = 58,983.40 : x
  2. Step 2: Convert to fraction form
    65,981.80/98,907.90 = 58,983.40/x
  3. Step 3: Cross multiply
    65,981.80x = 98,907.90 × 58,983.40
  4. Step 4: Simplify right side
    65,981.80x = 5,833,924,228.86
  5. Step 5: Solve for x
    x = 5,833,924,228.86/65,981.80
  6. Step 6: Final answer
    x = 88,417.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.