Home / 78,320.48-108,083.06-42,510.80

Finding the Fourth Proportional to 78,320.48, 108,083.06 and 42,510.80

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Solution

The fourth proportional to 78,320.48, 108,083.06 and 42,510.80 is: 58,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,320.48 : 108,083.06 = 42,510.80 : x
  2. Step 2: Convert to fraction form
    78,320.48/108,083.06 = 42,510.80/x
  3. Step 3: Cross multiply
    78,320.48x = 108,083.06 × 42,510.80
  4. Step 4: Simplify right side
    78,320.48x = 4,594,697,347.05
  5. Step 5: Solve for x
    x = 4,594,697,347.05/78,320.48
  6. Step 6: Final answer
    x = 58,665.34

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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.