Home / 53,831.20-80,746.80-42,154.40

Finding the Fourth Proportional to 53,831.20, 80,746.80 and 42,154.40

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Solution

The fourth proportional to 53,831.20, 80,746.80 and 42,154.40 is: 63,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,831.20 : 80,746.80 = 42,154.40 : x
  2. Step 2: Convert to fraction form
    53,831.20/80,746.80 = 42,154.40/x
  3. Step 3: Cross multiply
    53,831.20x = 80,746.80 × 42,154.40
  4. Step 4: Simplify right side
    53,831.20x = 3,403,832,905.92
  5. Step 5: Solve for x
    x = 3,403,832,905.92/53,831.20
  6. Step 6: Final answer
    x = 63,231.60

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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.