Home / 65,190.12-89,963.64-42,543.60

Finding the Fourth Proportional to 65,190.12, 89,963.64 and 42,543.60

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Solution

The fourth proportional to 65,190.12, 89,963.64 and 42,543.60 is: 58,711.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,190.12 : 89,963.64 = 42,543.60 : x
  2. Step 2: Convert to fraction form
    65,190.12/89,963.64 = 42,543.60/x
  3. Step 3: Cross multiply
    65,190.12x = 89,963.64 × 42,543.60
  4. Step 4: Simplify right side
    65,190.12x = 3,827,377,114.70
  5. Step 5: Solve for x
    x = 3,827,377,114.70/65,190.12
  6. Step 6: Final answer
    x = 58,711.00

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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.