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Finding the Fourth Proportional to 42,692.52, 64,038.78 and 21,902.76

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Solution

The fourth proportional to 42,692.52, 64,038.78 and 21,902.76 is: 32,854.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,692.52 : 64,038.78 = 21,902.76 : x
  2. Step 2: Convert to fraction form
    42,692.52/64,038.78 = 21,902.76/x
  3. Step 3: Cross multiply
    42,692.52x = 64,038.78 × 21,902.76
  4. Step 4: Simplify right side
    42,692.52x = 1,402,626,029.03
  5. Step 5: Solve for x
    x = 1,402,626,029.03/42,692.52
  6. Step 6: Final answer
    x = 32,854.14

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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.