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Finding the Fourth Proportional to 72,427.80, 98,127.45 and 72,427.80

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Solution

The fourth proportional to 72,427.80, 98,127.45 and 72,427.80 is: 98,127.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,427.80 : 98,127.45 = 72,427.80 : x
  2. Step 2: Convert to fraction form
    72,427.80/98,127.45 = 72,427.80/x
  3. Step 3: Cross multiply
    72,427.80x = 98,127.45 × 72,427.80
  4. Step 4: Simplify right side
    72,427.80x = 7,107,155,323.11
  5. Step 5: Solve for x
    x = 7,107,155,323.11/72,427.80
  6. Step 6: Final answer
    x = 98,127.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.