Home / 78,734,719.80-118,102,079.70-21,232,803.60

Finding the Fourth Proportional to 78,734,719.80, 118,102,079.70 and 21,232,803.60

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Solution

The fourth proportional to 78,734,719.80, 118,102,079.70 and 21,232,803.60 is: 31,849,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734,719.80 : 118,102,079.70 = 21,232,803.60 : x
  2. Step 2: Convert to fraction form
    78,734,719.80/118,102,079.70 = 21,232,803.60/x
  3. Step 3: Cross multiply
    78,734,719.80x = 118,102,079.70 × 21,232,803.60
  4. Step 4: Simplify right side
    78,734,719.80x = 2,507,638,263,021,647
  5. Step 5: Solve for x
    x = 2,507,638,263,021,647/78,734,719.80
  6. Step 6: Final answer
    x = 31,849,205.40

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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.