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Finding the Fourth Proportional to 65,980.16, 90,930.51 and 46,860.77

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Solution

The fourth proportional to 65,980.16, 90,930.51 and 46,860.77 is: 64,581.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,980.16 : 90,930.51 = 46,860.77 : x
  2. Step 2: Convert to fraction form
    65,980.16/90,930.51 = 46,860.77/x
  3. Step 3: Cross multiply
    65,980.16x = 90,930.51 × 46,860.77
  4. Step 4: Simplify right side
    65,980.16x = 4,261,073,487.77
  5. Step 5: Solve for x
    x = 4,261,073,487.77/65,980.16
  6. Step 6: Final answer
    x = 64,581.14

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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.