Home / 74,264.40-111,505.95-57,643.20

Finding the Fourth Proportional to 74,264.40, 111,505.95 and 57,643.20

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Solution

The fourth proportional to 74,264.40, 111,505.95 and 57,643.20 is: 86,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,264.40 : 111,505.95 = 57,643.20 : x
  2. Step 2: Convert to fraction form
    74,264.40/111,505.95 = 57,643.20/x
  3. Step 3: Cross multiply
    74,264.40x = 111,505.95 × 57,643.20
  4. Step 4: Simplify right side
    74,264.40x = 6,427,559,777.04
  5. Step 5: Solve for x
    x = 6,427,559,777.04/74,264.40
  6. Step 6: Final answer
    x = 86,549.68

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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.