Home / 42,841.50-64,303.80-20,670.45

Finding the Fourth Proportional to 42,841.50, 64,303.80 and 20,670.45

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Solution

The fourth proportional to 42,841.50, 64,303.80 and 20,670.45 is: 31,025.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,841.50 : 64,303.80 = 20,670.45 : x
  2. Step 2: Convert to fraction form
    42,841.50/64,303.80 = 20,670.45/x
  3. Step 3: Cross multiply
    42,841.50x = 64,303.80 × 20,670.45
  4. Step 4: Simplify right side
    42,841.50x = 1,329,188,482.71
  5. Step 5: Solve for x
    x = 1,329,188,482.71/42,841.50
  6. Step 6: Final answer
    x = 31,025.72

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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.