Home / 85,715.03-128,581.01-29,547.74

Finding the Fourth Proportional to 85,715.03, 128,581.01 and 29,547.74

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Solution

The fourth proportional to 85,715.03, 128,581.01 and 29,547.74 is: 44,324.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,715.03 : 128,581.01 = 29,547.74 : x
  2. Step 2: Convert to fraction form
    85,715.03/128,581.01 = 29,547.74/x
  3. Step 3: Cross multiply
    85,715.03x = 128,581.01 × 29,547.74
  4. Step 4: Simplify right side
    85,715.03x = 3,799,278,647.74
  5. Step 5: Solve for x
    x = 3,799,278,647.74/85,715.03
  6. Step 6: Final answer
    x = 44,324.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.