Home / 66,028.80-98,897.40-42,409.20

Finding the Fourth Proportional to 66,028.80, 98,897.40 and 42,409.20

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Solution

The fourth proportional to 66,028.80, 98,897.40 and 42,409.20 is: 63,520.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,028.80 : 98,897.40 = 42,409.20 : x
  2. Step 2: Convert to fraction form
    66,028.80/98,897.40 = 42,409.20/x
  3. Step 3: Cross multiply
    66,028.80x = 98,897.40 × 42,409.20
  4. Step 4: Simplify right side
    66,028.80x = 4,194,159,616.08
  5. Step 5: Solve for x
    x = 4,194,159,616.08/66,028.80
  6. Step 6: Final answer
    x = 63,520.16

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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.