Home / 65,712.09-98,547.45-21,328.59

Finding the Fourth Proportional to 65,712.09, 98,547.45 and 21,328.59

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Solution

The fourth proportional to 65,712.09, 98,547.45 and 21,328.59 is: 31,986.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,712.09 : 98,547.45 = 21,328.59 : x
  2. Step 2: Convert to fraction form
    65,712.09/98,547.45 = 21,328.59/x
  3. Step 3: Cross multiply
    65,712.09x = 98,547.45 × 21,328.59
  4. Step 4: Simplify right side
    65,712.09x = 2,101,878,156.60
  5. Step 5: Solve for x
    x = 2,101,878,156.60/65,712.09
  6. Step 6: Final answer
    x = 31,986.17

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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.