Home / 78,056.08-107,717.54-42,246.40

Finding the Fourth Proportional to 78,056.08, 107,717.54 and 42,246.40

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Solution

The fourth proportional to 78,056.08, 107,717.54 and 42,246.40 is: 58,300.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,056.08 : 107,717.54 = 42,246.40 : x
  2. Step 2: Convert to fraction form
    78,056.08/107,717.54 = 42,246.40/x
  3. Step 3: Cross multiply
    78,056.08x = 107,717.54 × 42,246.40
  4. Step 4: Simplify right side
    78,056.08x = 4,550,678,281.86
  5. Step 5: Solve for x
    x = 4,550,678,281.86/78,056.08
  6. Step 6: Final answer
    x = 58,300.11

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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.