Home / 42,985.14-64,477.62-20,800.68

Finding the Fourth Proportional to 42,985.14, 64,477.62 and 20,800.68

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Solution

The fourth proportional to 42,985.14, 64,477.62 and 20,800.68 is: 31,200.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,985.14 : 64,477.62 = 20,800.68 : x
  2. Step 2: Convert to fraction form
    42,985.14/64,477.62 = 20,800.68/x
  3. Step 3: Cross multiply
    42,985.14x = 64,477.62 × 20,800.68
  4. Step 4: Simplify right side
    42,985.14x = 1,341,178,340.78
  5. Step 5: Solve for x
    x = 1,341,178,340.78/42,985.14
  6. Step 6: Final answer
    x = 31,200.98

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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.