Home / 66,430,223.20-99,645,334.80-40,788,085.60

Finding the Fourth Proportional to 66,430,223.20, 99,645,334.80 and 40,788,085.60

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Solution

The fourth proportional to 66,430,223.20, 99,645,334.80 and 40,788,085.60 is: 61,182,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,223.20 : 99,645,334.80 = 40,788,085.60 : x
  2. Step 2: Convert to fraction form
    66,430,223.20/99,645,334.80 = 40,788,085.60/x
  3. Step 3: Cross multiply
    66,430,223.20x = 99,645,334.80 × 40,788,085.60
  4. Step 4: Simplify right side
    66,430,223.20x = 4,064,342,445,463,059
  5. Step 5: Solve for x
    x = 4,064,342,445,463,059/66,430,223.20
  6. Step 6: Final answer
    x = 61,182,128.40

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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.