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Finding the Fourth Proportional to 70,547.50, 97,209.23 and 65,670.49

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Solution

The fourth proportional to 70,547.50, 97,209.23 and 65,670.49 is: 90,489.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,547.50 : 97,209.23 = 65,670.49 : x
  2. Step 2: Convert to fraction form
    70,547.50/97,209.23 = 65,670.49/x
  3. Step 3: Cross multiply
    70,547.50x = 97,209.23 × 65,670.49
  4. Step 4: Simplify right side
    70,547.50x = 6,383,777,687.78
  5. Step 5: Solve for x
    x = 6,383,777,687.78/70,547.50
  6. Step 6: Final answer
    x = 90,489.07

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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.