Home / 78,035.40-107,688.04-42,224.64

Finding the Fourth Proportional to 78,035.40, 107,688.04 and 42,224.64

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Solution

The fourth proportional to 78,035.40, 107,688.04 and 42,224.64 is: 58,269.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,035.40 : 107,688.04 = 42,224.64 : x
  2. Step 2: Convert to fraction form
    78,035.40/107,688.04 = 42,224.64/x
  3. Step 3: Cross multiply
    78,035.40x = 107,688.04 × 42,224.64
  4. Step 4: Simplify right side
    78,035.40x = 4,547,088,721.31
  5. Step 5: Solve for x
    x = 4,547,088,721.31/78,035.40
  6. Step 6: Final answer
    x = 58,269.56

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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.