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Finding the Fourth Proportional to 65,740.48, 90,642.48 and 45,614.56

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Solution

The fourth proportional to 65,740.48, 90,642.48 and 45,614.56 is: 62,893.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,740.48 : 90,642.48 = 45,614.56 : x
  2. Step 2: Convert to fraction form
    65,740.48/90,642.48 = 45,614.56/x
  3. Step 3: Cross multiply
    65,740.48x = 90,642.48 × 45,614.56
  4. Step 4: Simplify right side
    65,740.48x = 4,134,616,842.51
  5. Step 5: Solve for x
    x = 4,134,616,842.51/65,740.48
  6. Step 6: Final answer
    x = 62,893.01

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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.