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Finding the Fourth Proportional to 71,656.04, 98,887.62 and 39,831.08

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Solution

The fourth proportional to 71,656.04, 98,887.62 and 39,831.08 is: 54,968.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,656.04 : 98,887.62 = 39,831.08 : x
  2. Step 2: Convert to fraction form
    71,656.04/98,887.62 = 39,831.08/x
  3. Step 3: Cross multiply
    71,656.04x = 98,887.62 × 39,831.08
  4. Step 4: Simplify right side
    71,656.04x = 3,938,800,703.23
  5. Step 5: Solve for x
    x = 3,938,800,703.23/71,656.04
  6. Step 6: Final answer
    x = 54,968.16

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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.