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Finding the Fourth Proportional to 42,985.49, 64,454.99 and 14,903.49

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Solution

The fourth proportional to 42,985.49, 64,454.99 and 14,903.49 is: 22,347.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,985.49 : 64,454.99 = 14,903.49 : x
  2. Step 2: Convert to fraction form
    42,985.49/64,454.99 = 14,903.49/x
  3. Step 3: Cross multiply
    42,985.49x = 64,454.99 × 14,903.49
  4. Step 4: Simplify right side
    42,985.49x = 960,604,549.94
  5. Step 5: Solve for x
    x = 960,604,549.94/42,985.49
  6. Step 6: Final answer
    x = 22,347.18

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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.