Home / 53,962.40-80,943.60-21,130.40

Finding the Fourth Proportional to 53,962.40, 80,943.60 and 21,130.40

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Solution

The fourth proportional to 53,962.40, 80,943.60 and 21,130.40 is: 31,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,962.40 : 80,943.60 = 21,130.40 : x
  2. Step 2: Convert to fraction form
    53,962.40/80,943.60 = 21,130.40/x
  3. Step 3: Cross multiply
    53,962.40x = 80,943.60 × 21,130.40
  4. Step 4: Simplify right side
    53,962.40x = 1,710,370,645.44
  5. Step 5: Solve for x
    x = 1,710,370,645.44/53,962.40
  6. Step 6: Final answer
    x = 31,695.60

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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.