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Finding the Fourth Proportional to 70,348.80, 97,126.64 and 62,782.16

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Solution

The fourth proportional to 70,348.80, 97,126.64 and 62,782.16 is: 86,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,348.80 : 97,126.64 = 62,782.16 : x
  2. Step 2: Convert to fraction form
    70,348.80/97,126.64 = 62,782.16/x
  3. Step 3: Cross multiply
    70,348.80x = 97,126.64 × 62,782.16
  4. Step 4: Simplify right side
    70,348.80x = 6,097,820,252.74
  5. Step 5: Solve for x
    x = 6,097,820,252.74/70,348.80
  6. Step 6: Final answer
    x = 86,679.80

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1.5x scale

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.