Home / 42,647.40-63,971.10-39,277.80

Finding the Fourth Proportional to 42,647.40, 63,971.10 and 39,277.80

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Solution

The fourth proportional to 42,647.40, 63,971.10 and 39,277.80 is: 58,916.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,647.40 : 63,971.10 = 39,277.80 : x
  2. Step 2: Convert to fraction form
    42,647.40/63,971.10 = 39,277.80/x
  3. Step 3: Cross multiply
    42,647.40x = 63,971.10 × 39,277.80
  4. Step 4: Simplify right side
    42,647.40x = 2,512,644,071.58
  5. Step 5: Solve for x
    x = 2,512,644,071.58/42,647.40
  6. Step 6: Final answer
    x = 58,916.70

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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.