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Finding the Fourth Proportional to 85,831.61, 118,449.04 and 47,592.77

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Solution

The fourth proportional to 85,831.61, 118,449.04 and 47,592.77 is: 65,678.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,831.61 : 118,449.04 = 47,592.77 : x
  2. Step 2: Convert to fraction form
    85,831.61/118,449.04 = 47,592.77/x
  3. Step 3: Cross multiply
    85,831.61x = 118,449.04 × 47,592.77
  4. Step 4: Simplify right side
    85,831.61x = 5,637,317,325.20
  5. Step 5: Solve for x
    x = 5,637,317,325.20/85,831.61
  6. Step 6: Final answer
    x = 65,678.81

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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.