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Finding the Fourth Proportional to 73,430.61, 110,143.98 and 20,840.10

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Solution

The fourth proportional to 73,430.61, 110,143.98 and 20,840.10 is: 31,259.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,430.61 : 110,143.98 = 20,840.10 : x
  2. Step 2: Convert to fraction form
    73,430.61/110,143.98 = 20,840.10/x
  3. Step 3: Cross multiply
    73,430.61x = 110,143.98 × 20,840.10
  4. Step 4: Simplify right side
    73,430.61x = 2,295,411,557.60
  5. Step 5: Solve for x
    x = 2,295,411,557.60/73,430.61
  6. Step 6: Final answer
    x = 31,259.60

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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.