Home / 66,528,021.80-99,792,032.70-21,089,743.40

Finding the Fourth Proportional to 66,528,021.80, 99,792,032.70 and 21,089,743.40

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Solution

The fourth proportional to 66,528,021.80, 99,792,032.70 and 21,089,743.40 is: 31,634,615.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528,021.80 : 99,792,032.70 = 21,089,743.40 : x
  2. Step 2: Convert to fraction form
    66,528,021.80/99,792,032.70 = 21,089,743.40/x
  3. Step 3: Cross multiply
    66,528,021.80x = 99,792,032.70 × 21,089,743.40
  4. Step 4: Simplify right side
    66,528,021.80x = 2,104,588,363,007,409
  5. Step 5: Solve for x
    x = 2,104,588,363,007,409/66,528,021.80
  6. Step 6: Final answer
    x = 31,634,615.10

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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.