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Finding the Fourth Proportional to 61,973.04, 92,958.48 and 20,420.40

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Solution

The fourth proportional to 61,973.04, 92,958.48 and 20,420.40 is: 30,630.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,973.04 : 92,958.48 = 20,420.40 : x
  2. Step 2: Convert to fraction form
    61,973.04/92,958.48 = 20,420.40/x
  3. Step 3: Cross multiply
    61,973.04x = 92,958.48 × 20,420.40
  4. Step 4: Simplify right side
    61,973.04x = 1,898,249,344.99
  5. Step 5: Solve for x
    x = 1,898,249,344.99/61,973.04
  6. Step 6: Final answer
    x = 30,630.24

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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.