Home / 71,702.02-98,948.87-39,870.23

Finding the Fourth Proportional to 71,702.02, 98,948.87 and 39,870.23

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Solution

The fourth proportional to 71,702.02, 98,948.87 and 39,870.23 is: 55,020.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,702.02 : 98,948.87 = 39,870.23 : x
  2. Step 2: Convert to fraction form
    71,702.02/98,948.87 = 39,870.23/x
  3. Step 3: Cross multiply
    71,702.02x = 98,948.87 × 39,870.23
  4. Step 4: Simplify right side
    71,702.02x = 3,945,114,588.20
  5. Step 5: Solve for x
    x = 3,945,114,588.20/71,702.02
  6. Step 6: Final answer
    x = 55,020.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.