Home / 65,459.04-98,204.40-21,090

Finding the Fourth Proportional to 65,459.04, 98,204.40 and 21,090

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Solution

The fourth proportional to 65,459.04, 98,204.40 and 21,090 is: 31,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,459.04 : 98,204.40 = 21,090 : x
  2. Step 2: Convert to fraction form
    65,459.04/98,204.40 = 21,090/x
  3. Step 3: Cross multiply
    65,459.04x = 98,204.40 × 21,090
  4. Step 4: Simplify right side
    65,459.04x = 2,071,130,796.00
  5. Step 5: Solve for x
    x = 2,071,130,796.00/65,459.04
  6. Step 6: Final answer
    x = 31,640.10

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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.