Home / 71,837.09-99,128.09-40,008.95

Finding the Fourth Proportional to 71,837.09, 99,128.09 and 40,008.95

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Solution

The fourth proportional to 71,837.09, 99,128.09 and 40,008.95 is: 55,208.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,837.09 : 99,128.09 = 40,008.95 : x
  2. Step 2: Convert to fraction form
    71,837.09/99,128.09 = 40,008.95/x
  3. Step 3: Cross multiply
    71,837.09x = 99,128.09 × 40,008.95
  4. Step 4: Simplify right side
    71,837.09x = 3,966,010,547.47
  5. Step 5: Solve for x
    x = 3,966,010,547.47/71,837.09
  6. Step 6: Final answer
    x = 55,208.40

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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.