Home / 72,547.19-100,120.07-40,283.47

Finding the Fourth Proportional to 72,547.19, 100,120.07 and 40,283.47

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Solution

The fourth proportional to 72,547.19, 100,120.07 and 40,283.47 is: 55,593.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,547.19 : 100,120.07 = 40,283.47 : x
  2. Step 2: Convert to fraction form
    72,547.19/100,120.07 = 40,283.47/x
  3. Step 3: Cross multiply
    72,547.19x = 100,120.07 × 40,283.47
  4. Step 4: Simplify right side
    72,547.19x = 4,033,183,686.65
  5. Step 5: Solve for x
    x = 4,033,183,686.65/72,547.19
  6. Step 6: Final answer
    x = 55,593.94

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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.