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Finding the Fourth Proportional to 64,937.80, 97,406.70 and 57,720.70

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Solution

The fourth proportional to 64,937.80, 97,406.70 and 57,720.70 is: 86,581.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,937.80 : 97,406.70 = 57,720.70 : x
  2. Step 2: Convert to fraction form
    64,937.80/97,406.70 = 57,720.70/x
  3. Step 3: Cross multiply
    64,937.80x = 97,406.70 × 57,720.70
  4. Step 4: Simplify right side
    64,937.80x = 5,622,382,908.69
  5. Step 5: Solve for x
    x = 5,622,382,908.69/64,937.80
  6. Step 6: Final answer
    x = 86,581.05

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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.