Home / 52,830.16-78,779.60-52,356.40

Finding the Fourth Proportional to 52,830.16, 78,779.60 and 52,356.40

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Solution

The fourth proportional to 52,830.16, 78,779.60 and 52,356.40 is: 78,073.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,830.16 : 78,779.60 = 52,356.40 : x
  2. Step 2: Convert to fraction form
    52,830.16/78,779.60 = 52,356.40/x
  3. Step 3: Cross multiply
    52,830.16x = 78,779.60 × 52,356.40
  4. Step 4: Simplify right side
    52,830.16x = 4,124,616,249.44
  5. Step 5: Solve for x
    x = 4,124,616,249.44/52,830.16
  6. Step 6: Final answer
    x = 78,073.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.