Home / 74,721.68-103,114.55-42,888.06

Finding the Fourth Proportional to 74,721.68, 103,114.55 and 42,888.06

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Solution

The fourth proportional to 74,721.68, 103,114.55 and 42,888.06 is: 59,184.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,721.68 : 103,114.55 = 42,888.06 : x
  2. Step 2: Convert to fraction form
    74,721.68/103,114.55 = 42,888.06/x
  3. Step 3: Cross multiply
    74,721.68x = 103,114.55 × 42,888.06
  4. Step 4: Simplify right side
    74,721.68x = 4,422,382,792.83
  5. Step 5: Solve for x
    x = 4,422,382,792.83/74,721.68
  6. Step 6: Final answer
    x = 59,184.74

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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.