Home / 45,637.60-68,456.40-42,138.40

Finding the Fourth Proportional to 45,637.60, 68,456.40 and 42,138.40

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Solution

The fourth proportional to 45,637.60, 68,456.40 and 42,138.40 is: 63,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,637.60 : 68,456.40 = 42,138.40 : x
  2. Step 2: Convert to fraction form
    45,637.60/68,456.40 = 42,138.40/x
  3. Step 3: Cross multiply
    45,637.60x = 68,456.40 × 42,138.40
  4. Step 4: Simplify right side
    45,637.60x = 2,884,643,165.76
  5. Step 5: Solve for x
    x = 2,884,643,165.76/45,637.60
  6. Step 6: Final answer
    x = 63,207.60

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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.