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Finding the Fourth Proportional to 72,224.80, 108,337.20 and 65,312.80

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Solution

The fourth proportional to 72,224.80, 108,337.20 and 65,312.80 is: 97,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,224.80 : 108,337.20 = 65,312.80 : x
  2. Step 2: Convert to fraction form
    72,224.80/108,337.20 = 65,312.80/x
  3. Step 3: Cross multiply
    72,224.80x = 108,337.20 × 65,312.80
  4. Step 4: Simplify right side
    72,224.80x = 7,075,805,876.16
  5. Step 5: Solve for x
    x = 7,075,805,876.16/72,224.80
  6. Step 6: Final answer
    x = 97,969.20

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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.