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Finding the Fourth Proportional to 65,295.45, 90,074.51 and 42,647.70

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Solution

The fourth proportional to 65,295.45, 90,074.51 and 42,647.70 is: 58,832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,295.45 : 90,074.51 = 42,647.70 : x
  2. Step 2: Convert to fraction form
    65,295.45/90,074.51 = 42,647.70/x
  3. Step 3: Cross multiply
    65,295.45x = 90,074.51 × 42,647.70
  4. Step 4: Simplify right side
    65,295.45x = 3,841,470,466.89
  5. Step 5: Solve for x
    x = 3,841,470,466.89/65,295.45
  6. Step 6: Final answer
    x = 58,832.13

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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.