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Finding the Fourth Proportional to 51,648.84, 71,263.80 and 30,430.08

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Solution

The fourth proportional to 51,648.84, 71,263.80 and 30,430.08 is: 41,986.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,648.84 : 71,263.80 = 30,430.08 : x
  2. Step 2: Convert to fraction form
    51,648.84/71,263.80 = 30,430.08/x
  3. Step 3: Cross multiply
    51,648.84x = 71,263.80 × 30,430.08
  4. Step 4: Simplify right side
    51,648.84x = 2,168,563,135.10
  5. Step 5: Solve for x
    x = 2,168,563,135.10/51,648.84
  6. Step 6: Final answer
    x = 41,986.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.