Home / 42,953.90-64,353.63-40,421.72

Finding the Fourth Proportional to 42,953.90, 64,353.63 and 40,421.72

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Solution

The fourth proportional to 42,953.90, 64,353.63 and 40,421.72 is: 60,559.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,953.90 : 64,353.63 = 40,421.72 : x
  2. Step 2: Convert to fraction form
    42,953.90/64,353.63 = 40,421.72/x
  3. Step 3: Cross multiply
    42,953.90x = 64,353.63 × 40,421.72
  4. Step 4: Simplify right side
    42,953.90x = 2,601,284,412.84
  5. Step 5: Solve for x
    x = 2,601,284,412.84/42,953.90
  6. Step 6: Final answer
    x = 60,559.91

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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.