Home / 78,880.32-108,855.04-43,070.40

Finding the Fourth Proportional to 78,880.32, 108,855.04 and 43,070.40

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Solution

The fourth proportional to 78,880.32, 108,855.04 and 43,070.40 is: 59,437.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880.32 : 108,855.04 = 43,070.40 : x
  2. Step 2: Convert to fraction form
    78,880.32/108,855.04 = 43,070.40/x
  3. Step 3: Cross multiply
    78,880.32x = 108,855.04 × 43,070.40
  4. Step 4: Simplify right side
    78,880.32x = 4,688,430,114.82
  5. Step 5: Solve for x
    x = 4,688,430,114.82/78,880.32
  6. Step 6: Final answer
    x = 59,437.26

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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.