Home / 39,749.60-59,631.60-19,978.40

Finding the Fourth Proportional to 39,749.60, 59,631.60 and 19,978.40

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Solution

The fourth proportional to 39,749.60, 59,631.60 and 19,978.40 is: 29,971.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,749.60 : 59,631.60 = 19,978.40 : x
  2. Step 2: Convert to fraction form
    39,749.60/59,631.60 = 19,978.40/x
  3. Step 3: Cross multiply
    39,749.60x = 59,631.60 × 19,978.40
  4. Step 4: Simplify right side
    39,749.60x = 1,191,343,957.44
  5. Step 5: Solve for x
    x = 1,191,343,957.44/39,749.60
  6. Step 6: Final answer
    x = 29,971.22

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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.