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Finding the Fourth Proportional to 66,145.48, 91,281.48 and 35,931.16

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Solution

The fourth proportional to 66,145.48, 91,281.48 and 35,931.16 is: 49,585.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.48 : 91,281.48 = 35,931.16 : x
  2. Step 2: Convert to fraction form
    66,145.48/91,281.48 = 35,931.16/x
  3. Step 3: Cross multiply
    66,145.48x = 91,281.48 × 35,931.16
  4. Step 4: Simplify right side
    66,145.48x = 3,279,849,462.92
  5. Step 5: Solve for x
    x = 3,279,849,462.92/66,145.48
  6. Step 6: Final answer
    x = 49,585.39

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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.