Home / 78,035.16-107,687.70-42,224.40

Finding the Fourth Proportional to 78,035.16, 107,687.70 and 42,224.40

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Solution

The fourth proportional to 78,035.16, 107,687.70 and 42,224.40 is: 58,269.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,035.16 : 107,687.70 = 42,224.40 : x
  2. Step 2: Convert to fraction form
    78,035.16/107,687.70 = 42,224.40/x
  3. Step 3: Cross multiply
    78,035.16x = 107,687.70 × 42,224.40
  4. Step 4: Simplify right side
    78,035.16x = 4,547,048,519.88
  5. Step 5: Solve for x
    x = 4,547,048,519.88/78,035.16
  6. Step 6: Final answer
    x = 58,269.23

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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.