Home / 62,981.08-86,907.47-38,778.21

Finding the Fourth Proportional to 62,981.08, 86,907.47 and 38,778.21

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Solution

The fourth proportional to 62,981.08, 86,907.47 and 38,778.21 is: 53,509.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,981.08 : 86,907.47 = 38,778.21 : x
  2. Step 2: Convert to fraction form
    62,981.08/86,907.47 = 38,778.21/x
  3. Step 3: Cross multiply
    62,981.08x = 86,907.47 × 38,778.21
  4. Step 4: Simplify right side
    62,981.08x = 3,370,115,928.34
  5. Step 5: Solve for x
    x = 3,370,115,928.34/62,981.08
  6. Step 6: Final answer
    x = 53,509.98

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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.