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Finding the Fourth Proportional to 64,870.80, 89,521.60 and 36,576.32

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Solution

The fourth proportional to 64,870.80, 89,521.60 and 36,576.32 is: 50,475.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,870.80 : 89,521.60 = 36,576.32 : x
  2. Step 2: Convert to fraction form
    64,870.80/89,521.60 = 36,576.32/x
  3. Step 3: Cross multiply
    64,870.80x = 89,521.60 × 36,576.32
  4. Step 4: Simplify right side
    64,870.80x = 3,274,370,688.51
  5. Step 5: Solve for x
    x = 3,274,370,688.51/64,870.80
  6. Step 6: Final answer
    x = 50,475.26

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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.