Home / 74,782,078.40-112,173,117.60-70,247,115.20

Finding the Fourth Proportional to 74,782,078.40, 112,173,117.60 and 70,247,115.20

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Solution

The fourth proportional to 74,782,078.40, 112,173,117.60 and 70,247,115.20 is: 105,370,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,782,078.40 : 112,173,117.60 = 70,247,115.20 : x
  2. Step 2: Convert to fraction form
    74,782,078.40/112,173,117.60 = 70,247,115.20/x
  3. Step 3: Cross multiply
    74,782,078.40x = 112,173,117.60 × 70,247,115.20
  4. Step 4: Simplify right side
    74,782,078.40x = 7,879,837,914,390,347
  5. Step 5: Solve for x
    x = 7,879,837,914,390,347/74,782,078.40
  6. Step 6: Final answer
    x = 105,370,672.80

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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.