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Finding the Fourth Proportional to 74,862.80, 112,196.80 and 30,437.76

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Solution

The fourth proportional to 74,862.80, 112,196.80 and 30,437.76 is: 45,617.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,862.80 : 112,196.80 = 30,437.76 : x
  2. Step 2: Convert to fraction form
    74,862.80/112,196.80 = 30,437.76/x
  3. Step 3: Cross multiply
    74,862.80x = 112,196.80 × 30,437.76
  4. Step 4: Simplify right side
    74,862.80x = 3,415,019,271.17
  5. Step 5: Solve for x
    x = 3,415,019,271.17/74,862.80
  6. Step 6: Final answer
    x = 45,617.04

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1.5x scale

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.